CAS冶炼低碳低硅铝镇静钢的生产实践  

Production Practice on CAS Smelting for Low Carbon & Low Silicon Aluminum Killed Steel

作　　者：敖翔[1] 王源[1] 帅勇[1] 吴春红[1] Ao Xiang;Wang Yuan;Shuai Yong;Wu Chunhong(Xinyu Iron & Steel Group Co.,Ltd.Xinyu 338001 Jiangxi,China)

机构地区：[1]新余钢铁集团有限公司,江西新余338001

出　　处：《江西冶金》2018年第6期10-13,共4页Jiangxi Metallurgy

摘　　要：新钢第二炼钢厂采用KR→BOF→CAS→CC工艺路线生产低碳低硅铝镇静钢,通过控制入炉铁水硫含量、转炉出钢挡渣及脱氧合金化、CAS精炼造渣及钙处理、连铸保护浇铸及稳定结晶器液面等措施,钢水可浇性增强,可实现一个浇次生产10炉及以上,钢水满足客户要求,w (Si)控制在0. 03%以下,低倍结果显示铸坯质量良好,C类中心偏析为1. 0级,中心疏松0. 5级。The process route (KR→BOF→CAS→CC) for low carbon & low silicon aluminium killed steel is introduced for No.2 Steelmaking Plant in Xinyu Steel.By controlling the sulfur content of charging hot metal,slag stopping during the converter steel tapping and deoxidation alloying,CAS refining slag and calcium treatment,protective casting with stable mold liquid level,pourability is high which one casting batch can reach 10 and above,steel quality meet customer’s requirements.Omega (Si) is controlled below 0.03%.Microstructure results show that the casting quality is fine with the C level,center segregation is 1.0 and 0.5 for center looseness.

关 键 词：铝镇静 钙处理 流动性 CAS造渣 

分 类 号：TF729[冶金工程—钢铁冶金]